The weather is sultry and hot, Mimi leaned on a big tree to sleep, Frog Guagua tells him that it is going to rain-the fish jumped on the water, the ants moved on the hillside, the red dragonfly flew very low... The sky is getting darker and darker, and there is a rumbling of thunder. As soon as Mimi and Guagua hide in the cave, it starts to rain heavily.